Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires react-parallel/react-parallel ^2@dev -> satisfiable by react-parallel/react-parallel[2.x-dev]. - react-parallel/react-parallel 2.x-dev requires ext-parallel * -> it is missing from your system. Install or enable PHP's parallel extension. To enable extensions, verify that they are enabled in your .ini files: - C:\tools\php\php.ini You can also run `php --ini` in a terminal to see which files are used by PHP in CLI mode. Alternatively, you can run Composer with `--ignore-platform-req=ext-parallel` to temporarily ignore these required extensions.

Process completed with exit code 2.